2045144254 has 4 divisors (see below), whose sum is σ = 3067716384. Its totient is φ = 1022572126.

The previous prime is 2045144237. The next prime is 2045144267. The reversal of 2045144254 is 4524415402.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511286062 + ... + 511286065.

It is an arithmetic number, because the mean of its divisors is an integer number (766929096).

Almost surely, 2^2045144254 is an apocalyptic number.

2045144254 is a deficient number, since it is larger than the sum of its proper divisors (1022572130).

2045144254 is a wasteful number, since it uses less digits than its factorization.

2045144254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022572129.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 2045144254 is about 45223.2711554571. The cubic root of 2045144254 is about 1269.3303047403.

Adding to 2045144254 its reverse (4524415402), we get a palindrome (6569559656).

The spelling of 2045144254 in words is "two billion, forty-five million, one hundred forty-four thousand, two hundred fifty-four".